Grinding machine



June 6, 1939. c. L. OTT 2,161,311

GRINDING MACHINE Filed Aug. 12, 1957 3 Sheets-Sheet l INVENTOR Come/w L.'0TT

, TORNEY GRINDING MACHINE Filed Aug. 12, 1957 3 Sheets-Sheet 2 ORNEY June 6, 1939. c. L. OTT 2,161,311

GRINDING MACHINE Filed Aug. 12, 1937 3 Sheets-Sheet I5 INVENTOR Came/w 1.. 011' TTORNEY Patented June 6, 1939 UNITED STATES PATENT OFFICE GRINDING MACHINE Conrad L. Ott, Detroit, Mich, assignor to Landls Tool Company, Waynesboro, Pa.

Application August 12, 1937, Serial No. 158,786

Claims. (01. 51-49) My invention relates to a machine for grindfootstock I4 rotatably support a roll l5 having ing steel mill and other rolls and particularly taper necks l6 and H. the means for grinding taper necks on such rolls. An auxiliary carriage includes a table 2| which It is an object of my invention to provide means has one end adjustably mounted on guide block 5 for grinding tapers on rolls which are too large 22 which in turn rests on ways It! and I9. Said 5 to be accommodated on the swivel type of work uide block has a curved T-slot 56 and the table support. may be secured thereto by means of T-bolt 55.

A further object is to provide means for trav- The other end of table 2| is pivotally mounted ersing th rindin wheel at an angle to th on a swivel base 20 which in turn rests on and work. is bolted to carriage ll. Said table is mounted 10 A further obje t is t provide an auxiliary for adjustment about pivot 60 and may be secured grinding wheel unit having self contained feed in any a ju d DOSitiOn y means of and traverse mechanisms and which may be rein T-SIOUS A Carriage 23 is S y ed movably mounted on 3, grinding machine in ways 6' and 62 on table 2|. Carriage 23 may Heretofore the grinding of tapered necks on be leciplocated y means of a ad screw 35 steel mill rolls has been limited to comparatively meunted thereon in Operative n ag ment with a Small rolls Such as can be Supported by the halfnut 36 secured to table 2|. The means for traversing Work carriage The grinding f tapers rotating said screw consists of a reversible motor on such a machine simply requires that the swivel 38 driving thru any Suitable Speed change mechatable be set for the desired taper, the carriage nism- Said table also be moved manu' 20 reciprocated past the grinding whee1 when ally by handwheel 41 which may drive thru said grinding the larger rolls the grinding wheel is speed Change mechamsm- P 38 may be reciprocated and the work is mounted on a fixed versed by lever thrfl Swltches w support which can be neither swiveled nor refor F sajld motor automatlcany ciprocated. Several attempts have been made conslsts of a pan of upnght Supports 45 on m to utilize various forms of crowning mechanisms S Supports carry a dog P 42 on Whlch for grinding tapers. Such mechanisms are not a of dogs 43 9 9 are adlustably; mounteddesigned for this purpose and are generally un- A Wheel support 24 1S Shdably m ways 63 satisfactory and 54 at the left hand end of carriage 23. A

I have found that the best results are obtained gnndmg wheel 25 1s .rotatably mounted m Sam 30 by the use of a grinding wheel unit which may wheel support and dnYen by a motor be mounted in such a manner that it may be ad- The means for feeding the wheel toward and justed to any angle relative to the axis of the 3 i i i of zg g ig work within a given range and which may be m ve gear or 0 er sm 8 ea S o reciprocated along the work in the direction of Yertica1 shaft A motor. 28 Serves to P adjustment to grind a tapered surface. said feeding means at a rapid rate for positionheel for grinding. A lever 50 actuates Fl ure 1 IS a lan view of a heav t roll mg w gringing machingshowmg the g g my a switch (not shown) for controlling said motor invention 28. The feeding mechanism may be actuated 4 manually during grinding by means of hand- Figure 2 1s a front elevation partly in sectlon he 1 along the line 2-2 of Figure 3. W e

Operation Figure 3 is an end elevation partly in section on line 33 of Figure 2. During the grinding of the body of a roll the 45 In the drawings, Figure 1, numeral l0 inditaper grinding attachment is not kept on the 45 cates the bed of a roll grinding machine of the m h ne Wh n i i desired to grind a tapered type shown and described in the Good patent, surface such as the necks I6 and H on roll l5, No. 1,904,827, granted April 18, 1933, II a wheel e attachment is placed on the machine wi h carriage slidably mounted in ways l8 and IS the guide block 22 resting on guide surfaces I8 thereon and driven by a motor I: through suitand H3. The w v l plate 0 is placed n c r 50 able gearing including a worm carried by said II and bolted thereto. Carriage II is then travcarriage andarack 56 on the bed 10. Agrinding ersed so as to bring wheel 25 to a position wheel base 30, grinding wheel 3| and motor 32 pp e one of th per d r s l1. Screws are slidably mounted on the carriage for move- 51 are loosened and the table 2| swiveled about.

.55 ment transversely thereof. Headstock l3 and pivot to the desired angle. Screws 5! are then 55 tightened and carriage 23 may be traversed at an angle to the axis of the work. Wheel 25 is positioned rapidly by motor 28 and is thereafter fed by handwheel 21. When the wheel 25 begins to grind, screw 35 is set into motion by shifting lever 16 which actuates a clutch not shown to connect motor 38 with screw 35. As the carriage 23 moves to left or right, lever 39 engages one or the other of dogs 43 and 44, whereupon said lever is oscillated to actuate one of the switches 45] or M to reverse motor 38 and cause carriage 23 to travel in the opposite direction. Alternate raversing and feeding movements are effected until the neck has been ground to the desired size and finish. The wheel is then backed off far enough to clear the body of the roll and carriage H is traversed to place wheel 25 opposite the neck l6.- Table 2| is again angularly adjusted so that the path of travel of wheel 25 will be parallel to the surface of neck l6. The wheel will then be moved. to grinding position and the operation performed on neck ll will be repeated on neck 16.

Iclaim:

1. A grinding machine comprising a work support, a grinding wheel support, a grinding wheel mounted thereon, mechanisms for effecting relative transverse and longitudinal movements of said supports, a second wheel support attached to said first mentioned wheel support and movable longitudinally in response to movement of said first mentioned wheel support, a grinding wheel mounted thereon, mechanisms for effecting relative transverse and longitudinal movements of said second grinding wheel and means to effect said movements at an angle to said first mentioned longitudinal and transverse movements.

2. A grinding machine comprising a bed, a work support mounted thereon, a grinding wheel carriage slidably mounted on Ways in said bed for movement longitudinally thereof, a grinding wheel support slidably mounted on said carriage for movement transversely thereof, a second carriage also slidably mounted on said ways, a grinding wheel support on said carriage which is slidable in two directions transversely of each other, means whereby said support may be adjusted angularly and means for traversing said support at an angle to the work which is proportional to the amount of said adjustment.

3. A grinding machine comprising a base, work supporting means mounted thereon, a carriage slidable longitudinally in ways on said bed, a wheel support slidable transversely on said carriage, mechanism for effecting said longitudinal movement, a second carriage one end of which is supported on said ways, the other end of which rests on said first carriage, a grinding wheel support on said second carriage, power mechanisms for effecting relative longitudinal and transverse movements of said wheel support and means for causing said longitudinal movement to take place at an angle to the direction of movement of said first carriage.

4. A grinding machine comprising a bed, a work support mounted thereon, a carriage slidably mounted in ways on said bed, a wheel support slidably mounted for movement transversely of said carriage, mechanism for providing said longitudinal movement, a second carriage comprising a table, a guide block in said ways for supporting one end of said table, a swivel plate removably secured to said first carriage for pivotally supporting the other end of said table, means on said guide block whereby said table may be angularly adjusted, longitudinal ways on said table, a carriage slidably mounted on said ways, a grinding wheel support slidably mounted on said carriage for movement transversely thereof and power mechanism on said carriage for efiecting longitudinal movement thereof.

5. A grinding machine comprising a bed, means carried th reby for rotatably supporting a work piece having a tapered surface to be ground, a grinding wheel carriage mounted on said bed for longitudinal movement parallel with the axis of rotation of the work piece, an auxiliary grinding wheel carriage mounted on said first named carriage for movement in a longitudinal direction parallel with the taper of the surface to be ground, and a grinding wheel support carried by said last named carriage for movement in a direction transversely of the direction of movement of said auxiliary carriage.

CONRAD L. OT'I. 

